Ports, adapters
and everything else
Zvonimir Spajic
2005. "Hexagonal architecture" article by Alistar Cokburn
shifted to calling it Ports And Adapters Architecture
response to Layered Architecture
Layered Architecture
Hexagonal Architecture
Adapters
target
adaptee
adapter
Ports and Adapters
Layers?
Benefits
Focus on Core
focus on the "heart of software"
core driven by domain not technology
Flexibility
deley technological decisions
deley technological decisions
(easy) swap between technologies
(easy) swap between technologies
Testability
testing adapters for driving ports
test (mock) adapters
stable testing suite
Boundaries
explicit communication
Maintainability
explicit architecture
Cons
Complexity
every pattern adds complexity
does it pay off?
Questions?
Resources
Alistar Cokburn
Mattias Noback
Robert C. Martin
